Class: Query2SPARQL

Inherits:
Object
  • Object
show all
Defined in:
lib/active_rdf/queryengine/query2sparql.rb

Class Method Summary collapse

Class Method Details

.translate(query) ⇒ Object 



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# File 'lib/active_rdf/queryengine/query2sparql.rb', line 10

def self.translate(query)
  str = ""
  if query.select?
    distinct = query.distinct? ? "DISTINCT " : ""
  select_clauses = query.select_clauses.collect{|s| construct_clause(s)}

    str << "SELECT #{distinct}#{select_clauses.join(' ')} "
    str << "WHERE { #{where_clauses(query)} }"
  elsif query.ask?
    str << "ASK { #{where_clauses(query)} }"
  end
  
  $log.debug "Query2SPARQL: translated the query to #{str}"
  return str
end